EP 1070957 A2 20010124 - Differential refractive index detector and liquid chromatograph equipped with the same
Title (en)
Differential refractive index detector and liquid chromatograph equipped with the same
Title (de)
Differential-Refraktometer und damit ausgerüsteter Flüssigkeits-Chromatograph
Title (fr)
Réfractomètre différentiel et chromatographe en phase liquide ainsi équipé
Publication
Application
Priority
JP 20997899 A 19990723
Abstract (en)
To provide a differential refractive index detector free from fears for occurrence of personal errors in the judgement of stable condition and capable of performing highly efficient analysis operation, and a liquid chromatograph equipped with the detector. A differential refractive index detector provided with a reference cell (11), a sample cell (12), a light source (21) for irradiating light on these two cells(11,12), a detecting part(23) for detecting light transmitted through respective cells(11,12), and a signal processing part for applying predetermined processing to the output signal from the detecting part, which comprises means for sequentially performing an initial solution purge operation of purging the sample cell(12) and the reference cell(11) with an eluent by passing the eluent through the cells(11,12) at the start of operation of said detector, a stabilizing solution purge operation of allowing the eluent purge of sample cell(12) and reference cell(11) to proceed and at the same time, confirming the stable condition thereof, and a stability confirming operation of confirming whether or not the detector has stabilized in an analysis capable condition by passing the eluent only through the sample cell, and means for announcing that the detector has stabilized in the analysis capable condition. According to the differential refractive index detector of the present invention, the processing from the initial solution purge operation to the stability confirming operation can be automated and a highly efficient analysis operation can be attained. <IMAGE>
IPC 1-7
IPC 8 full level
G01N 21/15 (2006.01); G01N 21/41 (2006.01); G01N 30/02 (2006.01); G01N 30/74 (2006.01)
CPC (source: EP)
G01N 21/4133 (2013.01); G01N 30/74 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1070957 A2 20010124; EP 1070957 A3 20020403; EP 1070957 B1 20051123; AT E310947 T1 20051215; DE 60024176 D1 20051229; DE 60024176 T2 20060803; JP 2001033386 A 20010209; JP 3574010 B2 20041006
DOCDB simple family (application)
EP 00104840 A 20000307; AT 00104840 T 20000307; DE 60024176 T 20000307; JP 20997899 A 19990723